I grabbed screenshots of the top 10 on every in-game leaderboard on every platform. Sharing them here for those who want to compare their times.

Google Drive folder (don't know of a better way to host albums, sorry)

• UPDATE—I've dumped the entire PS3 leaderboard as of 2024-04-09. You can find the data here: Google Drive
• UPDATE 2—PS3 leaderboard redumped as of 2025-04-05. Some inaccuracies that were in the older dump have been resolved.
• UPDATE 3—PC and Xbox 360 leaderboards have been dumped as of 2026-07-06 and 2026-07-12, respectively. PS3 leaderboards have been redumped as of 2026-06-26. Also, for those unaware, my dumping tools are available on GitHub: PS3 source, PC/X360 source, releases

Edit 2025-11-29: I previously said the PC top 10 was best for comparison. I now believe there's no universally good top 10 to check and you should instead be looking at the dumped PS3 leaderboards, along with any videos. A combination of clutch use, trainers that allow out-of-bounds driving, a so-called traction mod, and online drafting (slipstreaming) all make it incredibly difficult to determine what times are legitimate, so just do your best.

Hope this helps some runners out there set some targets.